C\u0169ng nh\u01b0 c\u00e1c m\u00f4n c\u1edd b\u1ea1c kh\u00e1c, b\u1ea1n ph\u1ea3i c\u00e2n nh\u1eafc k\u1ef9 c\u00e0ng tr\u01b0\u1edbc khi ra quy\u1ebft \u0111\u1ecbnh, th\u1eafng kh\u00f4ng ki\u00eau, ch\u1ee7 quan, b\u1ea1i kh\u00f4ng n\u1ea3n, s\u1ee3 h\u00e3i. Ph\u1ea3i c\u00f3 s\u1ee9c kho\u1ebb, vui v\u1ebb m\u1edbi \u0111\u1ee7 t\u1ef1 tin v\u00e0 c\u00f3 tr\u1ef1c gi\u00e1c t\u1ed1t.<\/p>\n
M\u1ed7i l\u1ea7n c\u00f3 k\u1ebft qu\u1ea3 l\u00f4 d\u00f9 thua hay th\u1eafng c\u0169ng ko \u0111\u01b0\u1ee3c run s\u1ee3, m\u1ea5t th\u00ec m\u1ea5t r\u1ed3i, ngu th\u00ec ngu r\u1ed3i, ph\u1ea3i t\u1ec9nh t\u00e1o coi nh\u01b0 l\u1ea1i b\u1eaft \u0111\u1ea7u m\u1edbi v\u1edbi nh\u00e0 c\u00e1i, kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f3 t\u00e2m l\u00fd ham g\u1ee1 g\u1ea5p th\u1ebfp.<\/p>\n
Nhi\u1ec1u ng\u01b0\u1eddi cho r\u1eb1ng x\u00e1c su\u1ea5t xu\u1ea5t hi\u1ec7n l\u1ea1i c\u1ee7a nh\u1eefng con s\u1ed1 \u0111\u00e3 xu\u1ea5t hi\u1ec7n \u1edf k\u00ec tr\u01b0\u1edbc l\u00e0 s\u1ebd gi\u1ea3m xu\u1ed1ng n\u00ean ng\u01b0\u1eddi ch\u01a1i th\u01b0\u1eddng c\u00f3 xu h\u01b0\u1edbng l\u1ef1a ch\u1ecdn s\u1ed1 \u00edt xu\u1ea5t hi\u1ec7n h\u01a1n l\u00e0 nh\u1eefng s\u1ed1 xu\u1ea5t hi\u1ec7n th\u01b0\u1eddng xuy\u00ean.<\/p>\n
S\u1ed1 ng\u01b0\u1eddi kh\u00e1c th\u00ec l\u1ea1i trung th\u00e0nh v\u1edbi nh\u1eefng con s\u1ed1 ph\u1ed5 bi\u1ebfn, h\u1ecd ngh\u0129 nh\u1eefng con s\u1ed1 \u0111\u00e3 xu\u1ea5t hi\u1ec7n \u1edf k\u00ec tr\u01b0\u1edbc nhi\u1ec1u kh\u1ea3 n\u0103ng s\u1ebd xu\u1ea5t hi\u1ec7n l\u1ea1i l\u1ea7n n\u1eefa.<\/p>\n
Suy cho c\u00f9ng th\u00ec 2 c\u00e1ch ngh\u0129 n\u00e0y \u0111\u1ec1u c\u00f3 ph\u1ea7n thi\u00ean v\u1ecb. N\u1ebfu ch\u00fang ta quan s\u00e1t nh\u1eefng con s\u1ed1, ngo\u00e0i vi\u1ec7c quan s\u00e1t nh\u1eefng con s\u1ed1 xu\u1ea5t hi\u1ec7n g\u1ea7n \u0111\u00e2y th\u00ec ng\u01b0\u1eddi ch\u01a1i c\u00f2n ph\u1ea3i tham kh\u1ea3o nh\u1eefng s\u1ed1 li\u1ec7u tr\u01b0\u1edbc \u0111\u00f3. Khi n\u1eafm \u0111\u01b0\u1ee3c quy lu\u1eadt thay phi\u00ean nhau c\u1ee7a c\u00e1c con s\u1ed1 n\u00f3ng l\u1ea1nh n\u00e0y th\u00ec m\u1edbi n\u00e2ng cao \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t tr\u00fang th\u01b0\u1edfng c\u1ee7a anh em nhi\u1ec1u h\u01a1n.<\/p>\n
Trong suy ngh\u0129 c\u1ee7a ch\u00fang ta \u0111\u1ec1u c\u00f3 xu h\u01b0\u1edbng s\u1ed1 ch\u1eb5n-l\u1ebb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau. Nh\u01b0ng l\u1ecbch s\u1eed m\u1edf th\u01b0\u1edfng \u0111\u00e3 cho ch\u00fang ta bi\u1ebft r\u00f5, hi\u1ec7n t\u01b0\u1ee3ng c\u00f4ng b\u1eb1ng c\u1ee7a s\u1ed1 ch\u1eb5n- l\u1ebb r\u1ea5t \u00edt khi xu\u1ea5t hi\u1ec7n, th\u01b0\u1eddng th\u01b0\u1eddng l\u00e0 s\u1ed1 l\u1ebb ra li\u00ean t\u1ee5c 3-5 k\u00ec th\u00ec \u0111\u1ebfn s\u1ed1 ch\u1eb5n. V\u00ec v\u1eady khi ch\u00fang ta l\u1ef1a ch\u1ecdn s\u1ed1 \u0111\u1eb7t c\u01b0\u1ee3c c\u0169ng n\u00ean ch\u00fa \u00fd v\u00e0o s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a c\u00e1c con s\u1ed1 m\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh ph\u00f9 h\u1ee3p.<\/p>\n